CVE-2026-43163

MEDIUMNVD 4.74.7—
EchelonGraph scoreMEDIUM confidence

Score 4.7 from GitHub Security Advisory published 2026-05-06. NVD baseline CVSS 4.7; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
4.7
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 4.7Exploit: NoneExposed: 0

A fix is available — apply it.

In the Linux kernel, the following vulnerability has been resolved:

md/bitmap: fix GPF in write_page caused by resize race

A General Protection Fault occurs in write_page() during array resize: RIP: 0010:write_page+0x22b/0x3c0 [md_mod]

This is a use-after-free race between bitmap_daemon_work() and __bitmap_resize(). The daemon iterates over bitmap->storage.filemap without locking, while the resize path frees that storage via md_bitmap_file_unmap(). quiesce() does not stop the md thread, allowing concurrent access to freed pages.

Fix by holding mddev->bitmap_info.mutex during the bitmap update.

CVSS v3
4.7
EG Score
4.7(medium)
EPSS
0.6%
KEV
Not listed

Published

May 6, 2026

Last Modified

May 13, 2026

References (8)

Vendor Advisories for CVE-2026-43163(12)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(9)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatkernel-0:3.10.0-1160.151.1.el72026-06-10redhat
redhatkernel-0:5.14.0-570.119.1.el9_62026-06-04redhat
redhatkernel-0:5.14.0-284.174.1.el9_22026-06-03redhat
redhatkernel-rt-0:5.14.0-284.174.1.rt14.459.el9_22026-06-03redhat
redhatkernel-0:6.12.0-55.76.1.el10_02026-06-01redhat
redhatkernel-rt-0:4.18.0-553.126.1.rt7.467.el8_102026-05-28redhat
redhatkernel-0:4.18.0-553.126.1.el8_102026-05-28redhat
redhatkernel-0:5.14.0-427.127.1.el9_42026-05-27redhat
redhatkernel-0:5.14.0-687.10.1.el9_82026-05-20redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 6× in last 7d / 23× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 103 total refreshes for this CVE.

  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-13 22:30 UTCEPSS rescore
  3. 2026-07-13 06:13 UTCEPSS rescore
  4. 2026-07-12 05:46 UTCEPSS rescore
  5. 2026-07-11 08:27 UTCEPSS rescore
  6. 2026-07-09 19:10 UTCEPSS rescore
  7. 2026-07-08 15:16 UTCEPSS rescore
  8. 2026-07-07 13:46 UTCEPSS rescore
  9. 2026-07-06 16:27 UTCEPSS rescore
  10. 2026-07-06 02:23 UTCEPSS rescore
  11. 2026-07-05 02:30 UTCEPSS rescore
  12. 2026-07-01 15:06 UTCEPSS rescore
  13. 2026-06-30 23:22 UTCEPSS rescore
  14. 2026-06-28 14:07 UTCEPSS rescore
  15. 2026-06-27 03:08 UTCEPSS rescore
  16. 2026-06-24 14:05 UTCEPSS rescore
  17. 2026-06-23 21:33 UTCEPSS rescore
  18. 2026-06-21 01:59 UTCEPSS rescore
  19. 2026-06-19 19:25 UTCEPSS rescore
  20. 2026-06-18 17:52 UTCEPSS rescore
  21. 2026-06-18 17:52 UTCEPSS rescore
  22. 2026-06-17 17:53 UTCEPSS rescore
  23. 2026-06-16 17:52 UTCEPSS rescore
  24. 2026-06-15 17:49 UTCEPSS rescore
  25. 2026-06-14 07:38 UTCEG score recompute
Show 75 more
  1. 2026-06-14 07:38 UTCVendor advisory
  2. 2026-06-14 07:38 UTCGHSA enrichment
  3. 2026-06-13 23:00 UTCEPSS rescore
  4. 2026-06-12 23:12 UTCEPSS rescore
  5. 2026-06-12 23:12 UTCEPSS rescore
  6. 2026-06-12 05:43 UTCEG score recompute
  7. 2026-06-12 05:43 UTCVendor advisory
  8. 2026-06-12 05:43 UTCGHSA enrichment
  9. 2026-06-11 14:00 UTCEPSS rescore
  10. 2026-06-11 06:05 UTCEG score recompute
  11. 2026-06-11 06:05 UTCVendor advisory
  12. 2026-06-11 06:05 UTCGHSA enrichment
  13. 2026-06-10 22:18 UTCEPSS rescore
  14. 2026-06-10 13:22 UTCEPSS rescore
  15. 2026-06-10 13:22 UTCEPSS rescore
  16. 2026-06-10 06:26 UTCEG score recompute
  17. 2026-06-10 06:26 UTCVendor advisory
  18. 2026-06-10 06:26 UTCGHSA enrichment
  19. 2026-06-09 06:49 UTCEG score recompute
  20. 2026-06-09 06:49 UTCVendor advisory
  21. 2026-06-09 06:49 UTCGHSA enrichment
  22. 2026-06-08 14:17 UTCEPSS rescore
  23. 2026-06-08 14:17 UTCEPSS rescore
  24. 2026-06-08 07:06 UTCEG score recompute
  25. 2026-06-08 07:06 UTCVendor advisory
  26. 2026-06-08 07:06 UTCGHSA enrichment
  27. 2026-06-07 15:25 UTCEPSS rescore
  28. 2026-06-07 15:25 UTCEPSS rescore
  29. 2026-06-07 07:28 UTCEG score recompute
  30. 2026-06-07 07:28 UTCVendor advisory
  31. 2026-06-07 07:28 UTCGHSA enrichment
  32. 2026-06-06 13:47 UTCEPSS rescore
  33. 2026-06-06 13:47 UTCEPSS rescore
  34. 2026-06-06 07:49 UTCEG score recompute
  35. 2026-06-06 07:49 UTCVendor advisory
  36. 2026-06-06 07:49 UTCGHSA enrichment
  37. 2026-06-05 22:47 UTCEPSS rescore
  38. 2026-06-05 08:10 UTCEG score recompute
  39. 2026-06-05 08:10 UTCVendor advisory
  40. 2026-06-05 08:10 UTCGHSA enrichment
  41. 2026-06-05 06:10 UTCEPSS rescore
  42. 2026-06-05 06:10 UTCEPSS rescore
  43. 2026-06-04 13:12 UTCEPSS rescore
  44. 2026-06-04 13:12 UTCEPSS rescore
  45. 2026-06-04 08:32 UTCEG score recompute
  46. 2026-06-04 08:32 UTCVendor advisory
  47. 2026-06-04 08:32 UTCGHSA enrichment
  48. 2026-06-03 08:53 UTCEG score recompute
  49. 2026-06-03 08:53 UTCVendor advisory
  50. 2026-06-03 08:53 UTCGHSA enrichment
  51. 2026-06-02 20:13 UTCEPSS rescore
  52. 2026-06-02 09:14 UTCEG score recompute
  53. 2026-06-02 09:14 UTCVendor advisory
  54. 2026-06-02 09:14 UTCGHSA enrichment
  55. 2026-06-01 13:52 UTCEPSS rescore
  56. 2026-06-01 13:52 UTCEPSS rescore
  57. 2026-06-01 09:36 UTCEG score recompute
  58. 2026-06-01 09:36 UTCVendor advisory
  59. 2026-06-01 09:36 UTCGHSA enrichment
  60. 2026-05-31 22:30 UTCEPSS rescore
  61. 2026-05-31 22:30 UTCEPSS rescore
  62. 2026-05-31 00:16 UTCEPSS rescore
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  64. 2026-05-29 13:44 UTCEPSS rescore
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  66. 2026-05-28 13:44 UTCEPSS rescore
  67. 2026-05-28 13:44 UTCEPSS rescore
  68. 2026-05-27 13:40 UTCEPSS rescore
  69. 2026-05-27 13:40 UTCEPSS rescore
  70. 2026-05-26 13:44 UTCEPSS rescore
  71. 2026-05-26 07:18 UTCEPSS rescore
  72. 2026-05-21 22:43 UTCEPSS rescore
  73. 2026-05-20 22:38 UTCEPSS rescore
  74. 2026-05-20 22:38 UTCEPSS rescore
  75. 2026-05-20 14:17 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-43163?
CVE-2026-43163 is a medium vulnerability published on May 6, 2026. In the Linux kernel, the following vulnerability has been resolved: md/bitmap: fix GPF in write_page caused by resize race A General Protection Fault occurs in write_page() during array resize: RIP: 0010:writepage+0x22b/0x3c0 [mdmod] This is a use-after-free race between bitmapdaemonwork() and…
When was CVE-2026-43163 disclosed?
CVE-2026-43163 was first published in the National Vulnerability Database on May 6, 2026, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-43163 actively exploited?
CVE-2026-43163 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-43163?
CVE-2026-43163 has a CVSS v3 base score of 4.7 (NVD).
How do I remediate CVE-2026-43163?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-43163, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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